It is obvious that mortal men are confused, for whatever reason, about what the original message from God was. However God knows what He said.
Although all Bibles can be used to preach the Good News for sinners to be saved by, I cannot say that all Bibles can be used to correct false teachings when I have found only the KJV can do that in the past.
Although new Bible versions are coming out that may be the same as the KJV as far as keeping the meat in His words without sowing doubts within that Bible version, I do not know, but regardless, I have been & shall continue to rely only on the KJV, knowing that it is Jesus Christ as my Good Shepherd that helps me to understand & discern the meaning of His words.
None of these issues prevents God from saving His elect to be with Him for eternity. God is sovereign!
That is true but a clarity is needed because many believers thinks those professing Him that gets left behind, were not saved because He denied ever knowing them, when in fact, they were saved but left behind as in excommunicated from attending the Marriage Supper in Heaven for being workers of iniquity. Matthew 7:21-23
There are more than one way to deny Him than just verbally in order to be denied by Him. Titus 1:15-16 testify about that those who profess to know Him & yet deny Him in works so a saved believer in heresy can deny Him by works without verbally denying Him.
Example would be believing the lie that they can receive the Holy Spirit again apart from salvation. Even if they acknowledge that He is in them, they do so in hypocrisy by seeking to receive Him again after a sign which is the same as committing spiritual adultery ( Matthew 12:39 ) as if they had not received Him at all.
Or they can be unwittingly answer an altar call which is the opposite of the gospel preached when that apostate altar call is "If you are not sure you are saved, make a commitment to follow Christ" as if anyone can gain assurance of salvation by keeping it. That is not the same as that gospel of all those who call upon the Lord shall be saved. That altar call denies the gospel.
It is no wonder why many believers quit following Jesus because it is too hard as they judged themselves as not sincere when they keep sinning that which they do not want to do when Jesus says if anyone would follow after Him, we are to deny ourselves as able to by our will or merit, pick up the cross daily in that it is not we who live but Christ in us so that when He says "Follow Me", He is saying trust Me to help you to follow Me. Trust Me to lead you & guide you in the way you ought to go.
So by resorting to the flesh as if we can finish it by the flesh by keeping that commitment or promise to follow Him, we are denying our faith of looking to Him to help us to follow Him when we are looking to ourselves in doing the best we can in following Him.
If anyone doubts Jesus did not ask His disciples to make an oath to follow Him, but to trust Him to do this see thread.
Discerning Matthew 5:33-37
Important to note that even if they stop believing in Him, He is faithful because He still abides in former believers even after denying Him verbally in 2 Timothy 2:11-13.
2 Timothy 2:11 It is a faithful saying: For if we be dead with him, we shall also live with him: 12 If we suffer, we shall also reign with him: if we deny him, he also will deny us: 13 If we believe not, yet he abideth faithful: he cannot deny himself.
So those who believe Matthew 7:21-23 is about those professing Him but let behind were not saved, they are wrong. Like Esau & the prodigal son, they missed out on the firstfruits of the resurrection, but they are still His as they will be resurrected after the great tribulation as vessels unto dishonor but still in His House. 2 Timothy 2:20 for why former believers are called to depart from iniquity & not just carnal believers in 2 Timothy 2:18-21
2 Timothy 2: 18 Who concerning the truth have erred, saying that the resurrection is past already; and overthrow the faith of some. 19 Nevertheless the foundation of God standeth sure, having this seal, The Lord knoweth them that are his. And, let every one that nameth the name of Christ depart from iniquity. 20 But in a great house there are not only vessels of gold and of silver, but also of wood and of earth; and some to honour, and some to dishonour. 21 If a man therefore purge himself from these, he shall be a vessel unto honour, sanctified, and meet for the master's use, and prepared unto every good work.